This course has been designed to teach and discuss the following items to the graduate students in the Graduate School of Bioresource and Bioenvironmental Sciences in English. Hormones and endocrine system; Regulation of hormone secretion; Homeostasis and behavior; Stress physiology; Infection and Immunity; and Male and female reproductive behaviors. The main purpose of this class is to habituate students to understand and think different biological events in English. Since the expected students of this class are of Animal and Marine science background, the content of this class would be interesting to them.